<template>
  <a-upload
      v-model:file-list="fileList"
      name="file"
      list-type="picture-card"
      class="avatar-uploader"
      :show-upload-list="false"
      :action="uploadPath"
      :before-upload="beforeUpload"
      @change="handleChange"
  >
    <img v-if="imageUrl" :src="imageUrl" alt="avatar" />
    <div v-else>
      <loading-outlined v-if="loading"></loading-outlined>
      <plus-outlined v-else></plus-outlined>
      <div class="ant-upload-text">选择图片</div>
    </div>
  </a-upload>
  上传返回的结果是：{{result}}
</template>
<script lang="ts" setup>
import {getBaseURL} from "@/config/common.js";

const uploadPath = ref(getBaseURL() +"/minio/upload")
const fileList = ref([{
  uid: '-1',
  name: 'image.png',
  status: 'done',
  url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
}]);
const loading = ref(false);
const imageUrl = ref('');
const result = ref("")

function getBase64(img, callback) {
  const reader = new FileReader();
  reader.addEventListener('load', () => callback(reader.result));
  reader.readAsDataURL(img);
}

const handleChange = (info) => {
  if (info.file.status === 'uploading') {
    loading.value = true;
    return;
  }
  if (info.file.status === 'done') {
    getBase64(info.file.originFileObj, (base64Url: string) => {
      imageUrl.value = base64Url;
      loading.value = false;
    });
    result.value = info.file.response.data;
  }
  if (info.file.status === 'error') {
    loading.value = false;
    message.error('upload error');
  }
};

const beforeUpload = (file) => {
  const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png';
  if (!isJpgOrPng) {
    message.error('请选中JPG/PNG图片');
  }
  const isLt2M = file.size / 1024 / 1024 < 2;
  if (!isLt2M) {
    message.error('图片不能超过2MB!');
  }
  return isJpgOrPng && isLt2M;
};
</script>
<style scoped>
.avatar-uploader > .ant-upload {
  width: 128px;
  height: 128px;
}
.ant-upload-select-picture-card i {
  font-size: 32px;
  color: #999;
}

.ant-upload-select-picture-card .ant-upload-text {
  margin-top: 8px;
  color: #666;
}
</style>
